/**
 * @file Name: 2.cpp
 * @author: Fenghuwuyu
 * @version: 1.0
 * @brief:
 * @date: Thu 01 Apr 2021 12:53:38 AM PDT
 */

#include<iostream>

using namespace std;

double square(double x);

void print_square(double x);

double square(double x)
{
	return x*x;
};

void print_square(double x)
{
	cout << "The square of " << x << " is " << square(x) << endl; 
};


int main()
{
	print_square(1);

	return 0;
}


///
// sizeof(bool) = 1
// sizeof(char) = 1
// sizeof(int) = 4
// sizeof(double) = 8
//
// x+y 
// +x 
// x-y
// -x
// x*y
// x/y
// x%y
//
// x==y
// x!=y
// x<y
// x>y
// x<=y
// x>=y
//
